{
  "manageEntity": {
    "action": "Save",
    "entityId": "1622228499",
    "entityType": "Track",
    "nonce": "0x30e0adab3d51dadd0167fb2300ca0a7af4f225fa5f3910d63b6652d09fb16a5f",
    "signature": "0x3505ac99030169d3caaae5f2b6ff4aa7a23c24bf2a40954ffadee50350952df9698e57f99dc53b371c4df21bccaf51968c5c7ca146f3de6e60c880665eaeabd41c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}